The Apple Wireless Keyboard has been completely redesigned to feature an elegant, ultra-thin anodized aluminum enclosure with low-profile keys that provide crisp, responsive feel. Use function keys for one-touch access to a quickly access features such as screen brightness, volume, eject, play/pause, fast-forward and rewind, Expose and Dashboard. Its compact design fits on your lap or even the most crowded desk. Bluetooth wireless technology lets you use it just about anywhere within 30 feet. The keyboard automatically powers down when you're not using it and turns on instantly as soon as you start typing. This intelligent power management means you'll get up to nine months of battery life with average usage. It also has an on/off switch for when you're away from your computer for a long time.